So here is the thing. I got Airtel 4g Router with connection for Rs. 2242 per month 40gb limit. Now it is 40gb. You don’t expect it to be completely used up in 20 days. But yes these airtel goons show that I used up 40GB and not 20 GB in less than 20 days. Now they asked me to either upgrade or buy Smartbytes. I bought smartbyte of 10GB.
Wait in another 5 days I was done with the 10GB as well. But I hardly did anything during this period(no downloads, no usage, no movie, video anything). So basically Airtel will show more usage whereas your usage might be very less. And then charge you more.
This is Airtel. Speed is awesome but its of no use until and unless you get to use it. I use TATA broadband as well and I never could use 40 GB in that with 1 mbps speed.